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Thonny comes with Python 3.6 built in, so just one simple installer is needed, and you're ready to learn to program. You can also use a separate Python installation if necessary. The initial user interface is stripped of all features that may distract beginners.
Just press Ctrl+F5 instead of F5, and you can run your programs step-by-step, no breakpoints needed. Press F6 for a big step and F7 for a small step. Steps follow program structure, not just code lines.
Once you're done with hello-worlds, select View - Variables and see how your programs and shell commands affect Python variables.